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| Number | Title | Issue Date |
| 6938392 | Concrete filled pole A concrete filled pole includes longitudinally aligned reinforcing rods secured to the casing along vertices of its polygonal cross-sectional shape so as to improve the flexural load carrying ability of the pole. ... | 09/06/2005 |
| 6915831 | Drum for wrapping a cord A cord-wrapping device has a cord attached to a drum and includes a steeply inclined inlet portion and a second less inclined portion adjacent to said steeply inclined inlet. A cord feed guide directs the cord to begin wrapping onto the steeply inclined portion of t... | 07/12/2005 |
| 6691797 | Device for driving piles A device for use in combination with a pile driving apparatus for driving piles into the ground. The device (1) including a main body (13) which carries side grippers (18) and (19) each of which comprises a ram consisting of a piston and cylinder (20). A ... | 02/17/2004 |
